IllegalArgumentException: Unsupported ciphersuite

For application client running in WAS 8.5 we have code creating socket that fails with an error below.

    SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
    SSLSocket socket = (SSLSocket) factory.createSocket();
    String pickedCipher[] = {"TLS_DHE-RSA-AES128-SHA256"};
    socket.setEnabledCipherSuites(pickedCipher);
    String[] protocols = socket.getEnabledProtocols();

log:

java.lang.IllegalArgumentException: Unsupported ciphersuite SSL_DHE-RSA-AES128-SHA256 at com.ibm.jsse2.r.a(r.java:245) at com.ibm.jsse2.s.(s.java:51) at com.ibm.jsse2.SSLSocketImpl.setEnabledCipherSuites(SSLSocketImpl.java:186)

Any ideas?